Unreal Engine Issues
Unreal Engine Issues
Hot Reload not updating variables that have their values set in the constructor
UE - Foundation - Cpp Tools - Hot Reload - Feb 1, 2016If a variable's value is being set in the construction script of a class and then that value is edited (the line itself is edited, not another setting of the variable), hot reload will not update th ...
Crash occurs when using the VisRT console command in a project launched without the Editor using D3D12
UE - Graphics Features - Feb 6, 2017Launching a project outside of the Editor (-game) using D3D12 (-d3d12) results in a crash if the console command VisRT is used in the project. ...
Hypotenuse node unexpectedly returns "-nan(ind)" instead of "0.0" if both values passed into the node are "0.0"
UE - Gameplay - Blueprint - Feb 1, 2019The Hypotenuse Blueprint node currently returns a value of "-nan(ind)" if both values passed into the node are "0.0". This result is correct based on the code that the Hypotenuse node uses, but is n ...
Inherited UserWidgets can't create animations that bind to widgets on their parent's WidgetTree
UE - Editor - UI Systems - UMG - Nov 7, 2022Animating an inherited widget from a child UserWidget class appears to work, but the bindings don't resolve properly and the animation is null at runtime. This workflow should either be supported, o ...
FMath::Eval ignores groupings while solving
UE - Foundation - Nov 8, 2022This is not a regression. Tested in //UE5/Release-5.0 CL20979098 FMath::Eval ignores groupings while solving problems. This has caused some confusion with users who are expecting the groupings to b ...
Material Layers Ignore Virtual Texture Sampler Restrictions
UE - Rendering Architecture - Mar 25, 2024Virtual Textures can be assigned to Texture Sample Parameters that are not configured for Virtual Textures, if that parameter is inside of a Material Layer. Also found in Release-5.4, CL 32426910 ...
Translucency area has stripe-style issue on TSR
UE - Graphics Features - Mar 28, 2024The TSR History Rejection buffer develops a grid-like artifact over translucent, camera-facingplanes. This problem can be mitigated by increasing r.TSR.ShadingRejection.TileOverscan from 3 to 4 with ...
Object Load order issue in Blueprint Editor
UE - Gameplay - Blueprint Editor - Oct 21, 2024[Image Removed] change FindObject to StaticLoadObject might fix this issue ...
When a Niagara User Parameter is renamed, mesh bindings on Niagara Mesh Renderers are not updated, and the binding is silently broken
UE - Niagara - Mar 13, 2025In Niagara, Mesh Renderers expose a "Meshes" array for selecting the meshes to be rendered. On each array entry, a property "Mesh Parameter Binding" is available and allows the user to override that ...
Find in Blueprints: Default values of TMap keys are not returned
UE - Framework - Blueprint Editor - Sep 3, 2025Context Find-in-Blueprints can be used to search the current, or all, blueprints. If you enter a simple string, it would return nodes, pins, pin default values and default values for BP Variables ( ...